openwrtv3/target/linux/generic/backport-4.9/076-v4.11-0004-net-phy-bcm7xxx-Implement-EGPHY-workaround-for-7278.patch
John Crispin 74d00a8c38 kernel: split patches folder up into backport, pending and hack folders
* properly format/comment all patches
* merge debloat patches
* merge Kconfig patches
* merge swconfig patches
* merge hotplug patches
* drop 200-fix_localversion.patch - upstream
* drop 222-arm_zimage_none.patch - unused
* drop 252-mv_cesa_depends.patch - no longer required
* drop 410-mtd-move-forward-declaration-of-struct-mtd_info.patch - unused
* drop 661-fq_codel_keep_dropped_stats.patch - outdated
* drop 702-phy_add_aneg_done_function.patch - upstream
* drop 840-rtc7301.patch - unused
* drop 841-rtc_pt7c4338.patch - upstream
* drop 921-use_preinit_as_init.patch - unused
* drop spio-gpio-old and gpio-mmc - unused

Signed-off-by: John Crispin <john@phrozen.org>
2017-08-05 08:46:36 +02:00

68 lines
2.1 KiB
Diff

From: Florian Fainelli <f.fainelli@gmail.com>
Date: Fri, 20 Jan 2017 12:36:34 -0800
Subject: [PATCH] net: phy: bcm7xxx: Implement EGPHY workaround for 7278
Implement the HW design team recommended workaround in for 7278. Since
the GPHY now returns its revision information in MII_PHYS_ID[23] we need
to check whether the revision provided in flags is 0 or not.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
--- a/drivers/net/phy/bcm7xxx.c
+++ b/drivers/net/phy/bcm7xxx.c
@@ -163,12 +163,43 @@ static int bcm7xxx_28nm_e0_plus_afe_conf
return 0;
}
+static int bcm7xxx_28nm_a0_patch_afe_config_init(struct phy_device *phydev)
+{
+ /* +1 RC_CAL codes for RL centering for both LT and HT conditions */
+ bcm_phy_write_misc(phydev, AFE_RXCONFIG_2, 0xd003);
+
+ /* Cut master bias current by 2% to compensate for RC_CAL offset */
+ bcm_phy_write_misc(phydev, DSP_TAP10, 0x791b);
+
+ /* Improve hybrid leakage */
+ bcm_phy_write_misc(phydev, AFE_HPF_TRIM_OTHERS, 0x10e3);
+
+ /* Change rx_on_tune 8 to 0xf */
+ bcm_phy_write_misc(phydev, 0x21, 0x2, 0x87f6);
+
+ /* Change 100Tx EEE bandwidth */
+ bcm_phy_write_misc(phydev, 0x22, 0x2, 0x017d);
+
+ /* Enable ffe zero detection for Vitesse interoperability */
+ bcm_phy_write_misc(phydev, 0x26, 0x2, 0x0015);
+
+ r_rc_cal_reset(phydev);
+
+ return 0;
+}
+
static int bcm7xxx_28nm_config_init(struct phy_device *phydev)
{
u8 rev = PHY_BRCM_7XXX_REV(phydev->dev_flags);
u8 patch = PHY_BRCM_7XXX_PATCH(phydev->dev_flags);
int ret = 0;
+ /* Newer devices have moved the revision information back into a
+ * standard location in MII_PHYS_ID[23]
+ */
+ if (rev == 0)
+ rev = phydev->phy_id & ~phydev->drv->phy_id_mask;
+
pr_info_once("%s: %s PHY revision: 0x%02x, patch: %d\n",
phydev_name(phydev), phydev->drv->name, rev, patch);
@@ -192,6 +223,9 @@ static int bcm7xxx_28nm_config_init(stru
case 0x10:
ret = bcm7xxx_28nm_e0_plus_afe_config_init(phydev);
break;
+ case 0x01:
+ ret = bcm7xxx_28nm_a0_patch_afe_config_init(phydev);
+ break;
default:
break;
}